We had this problem and the 2 seat bench wouldn’t move at all in our van.
Took it to the dealers and they apparently replaced the bench, but this wasn’t at fault as the issue came back.
Turned out that a screw from the factory had made its way into one of the channels that the seat rollers sit on.
How they got it out, no idea as it was properly jammed.
What we had found is that after a random driving session we could sometimes move the seat, and we may have been able to recover the screw ourselves with a tactical piece of rubber tubing attached to a hoover and inserted into the channel may have brought it out. We clean down these channels this way now to try and keep debris out and preemptively stop it from happening again..
Good luck! An annoying issue for sure.